It's not true that it's to break role for ALL ragers... Not all ragers had their home/village/family killed/destroyed by mages... Some ragers actually have "learned" to hate mages, been convinced that it's wrong, etc...

What I say, is that although I agree that it may be against some roles, it's not against ALL rager roles. Of all my character, I entered Battleragers once, and had started two others that would end up there... And neither of the three were all anti-magic from the beginning. For one of them, it was even a decision on the fly... A rager was battleling a mage or anti-rager in Voralian and I told to myself: I'm going to follow the winner..

That being said, it could be a different mob for the quest.. Eventually.